Free tools
Construction calculators for Nigerian sites
Try five calculators free — no account needed. Sign up to unlock the full library and save results to your RazorBuilder project.
Explore all calculatorsFree calculators
Start with these five tools — no account needed. Open any calculator and run your quantities right away.
Structural
Concrete Calculator
Estimate volume, materials, and cost for concrete casting.
Use calculatorMeasurement
Square Meter Calculator (m²)
Instant Sqm calculator and optionally deduct for all openings using common Nigerian sizes.
Use calculatorStructural
Block Calculator
Estimate block count, mortar materials, and walling cost.
Use calculatorStructural
Steel Reinforcement Calculator
Estimate mesh/slab reinforcement when you know the slab size. Not for beams, columns, or stirrups.
Use calculatorFinishes
Tiles Calculator
Get Floor or wall tiling from dimensions, m² takeoff, or full room walls — plus optional skirting, adhesive or mortar.
Use calculatorFull calculator library
12 more tools available on RazorBuilder. Create a free account to unlock them and save results to your project.
Site guides
Process and how-to articles — practical workflows linked to the tools above.
